Master Lock 468L Seal Tight™ Handle-Off Ball Valve Lockout Device features a universal fit to effectively lock out all valves from 3/8in (10mm) to 4in (102mm). • Eliminates the risk of valve reactivation with removal of the handle and works in virtually all valve installations, including insulated pipes. • Constructed of durable PVC polyester fabric and HDPE plastic, the lightweight, flexible material makes device easy to carry and compact storage in safety toolboxes.